O.D. ½” / I.D. ¼” Rated at 300PSI SurfPrep's Ball Swivel Air Hose allows operators to maneuver sander in and out of tight areas without any restrictions. The hoses are one-of-a-kind for a couple of reasons. First, the hose has an ergonomic, lightweight connection to the sander and never needs to be disconnected from the tool. This stops air leaks because the bearings are not going to become worn out like other hoses in the industry.